Daily Question: 2011-1-25 Multiple Choice Question

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This post was last edited by salesment on 2011-1-25 08:36. Based on JB/T 4736—2002 \"Strengthening Rings\", determine which of the following statements regarding the technical requirements for strengthening rings are correct a. Weld joints used in low-temperature pressure vessels must adopt a fully penetrative structure. b. The reinforcement ring shall be manufactured as a single piece and must not be assembled from sections. c. The welding of the reinforcement ring to the housing and connectors shall be carried out using welding procedures that have been approved in accordance with JB 4708—2000. d. When installing the reinforcement ring, the M10 screw holes on the reinforcement ring should be positioned at the highest point of the housing. Answer: a c. Index: JB/T 4736—2002 \"Strengthening Rings\", item 51; those who participate and answer correctly will be rewarded, with the maximum number of additional points being 50. Reply ； 2; Please hide your replies. The method for hiding them is: http://bbs.hcbbs.com/thread-492556-1-1.html. Replies that are not hidden or edited after hiding will not be eligible for a reward ； 3; Please actively provide one question per day and receive a certain reward at http://bbs.hcbbs.com/thread-781748-1-1.html.